I have a 16-month-old and when we are starting the bed time routine I like to forward the phone to voicemail (VM). I was able to do this when I had Sprint as my local carrier and it helped minimize disruptions while quieting the house as my child fell asleep.

With Vonage I can enable VM and set the delay to instant, but for some reason my phone rings once before VM kicks in.

Please have a look at this feature. I’d like the "instant" setting to intercept the call and send it directly to VM without my phone ever ringing.